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-##===- docs/mk/common.defs.mk ------------------------------*- Makefile -*-===##
-#
-# The LLVM Compiler Infrastructure
-#
-# This file is distributed under the University of Illinois Open Source
-# License. See LICENSE.TXT for details.
-#
-##===----------------------------------------------------------------------===##
-
-# support for printing errors, warnings and info.
-
-# FUNCTION: print error message once and dump makefile list.
-# $1: error message. do NOT end in punctuation.
-# $2: optional. one or more words to list. if words > 1 then 1 per line.
-define fn.DUMP.error
-$(if $(filter 0,$(words $2)) \
- ,$(error $(call _DUMP.error,$1.)) \
- ,$(if $(filter 1,$(words $2)) \
- ,$(error $(call _DUMP.error,$1: $2)) \
- ,$(error $(call _DUMP.errorm,$1:,$2))))
-endef
-
-# FUNCTION: print one error message per word and dump makefile list.
-# $1: error message. do NOT end in punctuation.
-# $2: one or more words to list. 1 word per line.
-define fn.DUMP.errorn
-$(error $(call _DUMP.errorn,$1,$2))
-endef
-
-##===----------------------------------------------------------------------===##
-
-# MAKEFILE PRIVATE.
-# support for special makefile printing. Whitespace is very important for all
-# definitions; modify with caution.
-
-define _DUMP.error
-ERROR.
-***
-*** $1
-***
-$(call _DUMP.makefile_list,***,$1) ERROR
-endef
-
-define _DUMP.errorm
-ERROR.
-***
-*** $1
-***$(subst *** ,***,$(foreach n,$2, $n$(_TEXT.blank)***))
-$(call _DUMP.makefile_list,***,$1) ERROR
-endef
-
-define _DUMP.errorn
-ERROR.
-***
-***$(subst *** ,***,$(foreach n,$2, ERROR: $1: $n$(_TEXT.blank)***))
-$(call _DUMP.makefile_list,***,$1) ERROR
-endef
-
-define _DUMP.makefile_list
-$1 MAKEFILE_LIST:
-$1 $(abspath $(word 1,$(MAKEFILE_LIST)))
-$1$(subst $()$1 ,$1,$(foreach n,$(wordlist 2,999,$(MAKEFILE_LIST)), $n$(_TEXT.blank)$1))
-$1
-endef
-
-# force linefeed.
-define _TEXT.blank
-
-
-endef
-
-##===----------------------------------------------------------------------===##
-
-# FUNCTION: select
-# $1: variable basename (before .__.)
-# $2: selection key
-# RESULT: variable selection by key
-#
-SELECT = $(if $($1.__.$2),$($1.__.$2),$($1.__.default))
-
-# FUNCTION: safe(r) rm -rf
-# $1: list of dirs to remove, recursively
-#
-# Extra safety is put in place by wrapping dirs in $(realpath) which both cleans
-# up the path and returns blank if the path does not exist.
-#
-# An error is produced if removal of any generally unsafe dirs is attempted.
-#
-fn.RMRF = $(if $(call _RMRF.eval,$1) \
- ,$(call fn.DUMP.errorn,unsafe recursive dir removal in call function fn.RMRF,$(call _RMRF.eval,$1)) \
- ,$(RM) -rf $(realpath $1))
-
-_RMRF.eval = $(sort $(realpath $(filter $(realpath $(_RMRF.never)),$(realpath $1))))
-
-_RMRF.never = / /bin /dev /etc /home /net /opt /sbin /tmp /usr /var \
- /usr/bin /usr/sbin /usr/share \
- /usr/local/bin /usr/local/sbin /usr/local/share
-
-# FUNCTION: pipe and compress.
-# $1: target filename with filename extension of compression, if any.
-# RESULT: a suitable pipe for compression or empty.
-#
-fn.PIPE.COMP = $(fn.PIPE.COMP.$(suffix $1))
-fn.PIPE.COMP..gz = | $(GZIP)
-fn.PIPE.COMP..bz2 = | $(BZIP2)
-
-# FUNCTION: pipe and decompress.
-# $1: target filename with filename extension of compression, if any.
-# RESULT: a suitable pipe for decompression or empty.
-#
-fn.PIPE.DECOMP = $(fn.PIPE.DECOMP.$(suffix $1))
-fn.PIPE.DECOMP..gz = | $(GZIP) -d
-fn.PIPE.DECOMP..bz2 = | $(BZIP2) -d
-
-# FUNCTION: fetch working copy 'Last Changed Rev'.
-# $1: working copy directory.
-# RESULT: 'Last Changed Rev' value from svn info.
-#
-fn.SVN.LCREV = $(shell (svn info $1 2>/dev/null || echo "Last Changed Rev: 0") | $(SED) -n 's/^Last Changed Rev: *\([0-9][0-9]*\)/\1/p')